Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The transition to December results in a modest reduction in average high-temperature, moving from a cool 54.5°F (12.5°C) in November to a frosty 45.7°F (7.6°C). In the month of December, an average of 32.9°F (0.5°C) marks the low-temperature.Humidity
The months with the highest humidity are October and December, with an average relative humidity of 77%.Rainfall
In Keene Mill Heights, in December, during 10.8 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. Throughout the year, there are 166.5 rainfall days, and 32.76" (832mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Keene Mill Heights, Virginia, in December, snow falls for 2.4 days, with typically accumulated 1.57" (40mm) of snow. In Keene Mill Heights, during the entire year, snow falls for 16.2 days and aggregates up to 10.79" (274mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:08 am and sunset at 4:47 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:57 pm EST.
Sunshine
January, February and December, with an average of 5.2h of sunshine, are months with the least sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 2 in December transforms into this advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What are the most humid months?
What is the average humidity in December in Keene Mill Heights?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Keene Mill Heights have in December?
When is the sunrise / sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
When is the lowest UV index in Keene Mill Heights?
How high is the UV index in December?
Average temperature in December
Keene Mill Heights, VA
- Average high temperature in December: 45.7°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in December: 32.9°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in December
Keene Mill Heights, VA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Keene Mill Heights, VA
- Average wind speed in December: 6.4mph
The windiest month (with the highest average wind speed) is March (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
Keene Mill Heights, VA
- Average humidity in December: 77%
The months with the highest relative humidity are October and December (77%).
The month with the lowest relative humidity is July (71%).
Average rainfall in December
Keene Mill Heights, VA
- Average rainfall in December: 2.76"
The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (2.09").
Average rainfall days in December
Keene Mill Heights, VA
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in December
Keene Mill Heights, VA
- Average snowfall in December: 1.57"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Keene Mill Heights, VA
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Keene Mill Heights, VA
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 12min).
Average sunshine days in December
Keene Mill Heights, VA
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is November (19.3 days).
The months with the least sunshine days are May and July (10.5 days).
Average UV index in December
Keene Mill Heights, VA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Keene Mill Heights, VA
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Keene Mill Heights, VA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Keene Mill Heights, Virginia, USA
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